All Things Mk5 > Performance Modifications

Pipewerx 3" Exhaust Down Pipe High Flow Sports Cat Help

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rashg60:
I need some advice. I am thinking of going for this:-

http://www.ebay.co.uk/itm/golf-mk5-gti-3-Exhaust-Down-Pipe-High-Flow-Sports-Cat/300361586764?_trksid=p5411.c100170.m2943&_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20140131123831%26meid%3D0cfd795f9f82482ab3a6e93092a96b88%26pid%3D100170%26rk%3D1%26rkt%3D15%26sd%3D300361586764

I currently have the standard exhaust system. My questions are:-

Is the most power gain achieved from the downpipe/sports cat as opposed to the rear section?
Or is it recommended to change the entire system?
Would the above downpipe/sports cat fit the standard system? Or would this require additional chopping and changing?
What are people's thoughts on the Pipewerx system?
Is it any louder?
How much power gains to be expected?

I am due for a stage 1 R-Tech remap next week, so wanted something to compliment that.

All comments appreciated  :smiley:

mk5-beast-91:
Ive got the pipewerx decat downpipe and love it. Sounded abit raspy when bolted to the oem cat back but now have a miltek cat back and sounds awesome. But ive got a decat one so cant say with the sport cat. It will bolt straight to the oem exhaust so dont need to do any chopping. Fit is perfect to.
as far as im aware the restrictions are mainly in the downpipe and not in the cat back part. So id get the downpipe first and at a later date get a cat back system on if funds are short.

GrayMK5GTI:
I had this on my old Ed30.

Saw 314bhp & 320lb/ft at R-Tech with only a panel filter & downpipe & sports cat. Sounds great with the OEM cat back, not too loud, but a great exhaust note  :happy2:

Pre-map I had just shy of 260bhp so it gives around 15-20bhp. A cat back would have seen another ~3bhp  :grin: at this level of tune.

The BCS sports cats are better quality and higher flowing overall, but Pipewerx is great at the price.

I had Alex @ AKS trim 1.5inches off the pipe as the tailpipes stuck out a bit too much for my liking.

rashg60:
Thanks guys - it's the price that I like!

I used Pipewerx about 12 years ago for some custom made quad tailpipes on my Corrado G60 - car pic is still up on their gallery coincidentally (the yellow Corrado on the 2nd row of Sports & Saloons section):-

http://pipewerxcars.com/pw2_gallery.html

rashg60:
Also, just to be clear, the vast majority of the gains are achieved by the downpipe and sports cat - so why would you spend another £450+ on the cat back system? I'd be inclined to leave it alone if it's not even another 5bhp for so much money!

Unless I'm missing something of course........

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